Klohn Crippen Berger (KCB) was retained for the preliminary and detailed design of a new interchange connecting the south end of the South Fraser Perimeter Road (SFPR) with Highway 17 near Tsawwassen. The project is part of accelerated works provided as part of the SFPR project and includes three bridge structures:
- A 3-span (35 m-58 m-38 m) steel box girder bridge carrying the 4 lane SFPR on a curved alignment over the CN Rail tracks
- A 2-span (23 m-28 m) precast concrete box stringer bridge carrying Highway 17 over the SFPR
- A 2-span, 50 m steel girder bridge carrying 28th Ave over Highway17
This fast-track project used a contracting strategy employing separate ground improvement, preload, and two separate bridge construction contracts. In addition, a day labour contract undertook site preparations. Ground improvements were designed to protect against seismic liquefaction.
KCB managed a multi-discipline design team and performed the design project management, structural design, and geotechnical design. The design team overcame numerous geometric, geotechnical, stakeholder, contractual and scheduling constraints and challenges.